Land surveys--Pennsylvania--18th century 6 Surveys--Pennsylvania--18th century 5 Pennsylvania--Politics and government--18th century 3 Astronomy--18th century 2 Land surveys--Pennsylvania--Philadelphia--18th century 2 Armstrong, John 1 Astrology--German--18th Century 1 more ... Beekeeping--German--18th Century 1 Deeds--Germantown (Philadelphia, Pa.)--18th century 1 Deeds--Pennsylvania--18th Century 1 Geography--19th century 1 Germantown (Philadelphia, Pa.)--History 1 Indian--White Relations--18th century 1 Islands--Pennsylvania 1 Land Settlement--Pennsylvania--18th century 1 Land Surveys--18th century 1 Land surveys 1 Land surveys--Pennsylvania--19th century 1 Legal Documents--18th Century 1 Pennsylvania--Politics and government--17th century 1 Pennsylvania--Politics and government--19th century 1 Real Estate--Legal documents--18th century 1 Real Property--Pennsylvania--18th century 1 Roads--Pennsylvania--18th century 1 Roxborough (Philadelphia, Pa.)--History 1 Surveying--18th century 1 Surveys (land)--Pennsylvania--Philadelphia--18th century 1 Surveys--Pennsylvania--Montgomery County 1 less ...